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ELECTROMAGNETIC CALL BELL.

No. 525,145. Patented Aug. 28, 1894.

FIIIIlllllllIIIIIIIIIIIIIIIIIII[Ill I 1 UNITED STATES PATIENT OFFICE.

JOHN J. GEARY, OF CHESTER, PENNSYLVANIA, ASSIGNOB OF'ONE-HALF TO JOHN J. MOSSOP, OF SAME PLACE.

ELECTROMAGNETIC CALL-BELL.

SPECIFICATION forming part of Letters Patent No. 525,145, dated August 28, 1894.

' Application filecltlanuary 26,1894. smart. 498,066- (No model.)

To all whom it may concern:

.Be it known that I, JOEN J. GEARY, a citi= zen of the United States, residing at Chester, in the county of Delaware and Stateof Pennsylvania,have invented certain new and useful Improvements in Electromagnetic Call- Bells, of which the following is a specification.

My invention has relation in general to bells, audible signals or the like actuated by an electro-magnet or magnets; and it relates more particularly to the general construction and arrangement of such a device or appliance.

The principal objects of my invention are first, to provide a compact, durable, inexpensive and efficient electro-magnetic audible signal device or call bell; and second, to provide an electro-magnetic audible signaling device having the members thereof so arranged as that the signal thereby given is sharp or distinct.

My invention consists of the improvements hereinafter described and claimed.

The nature andscope of myinvention will be more fully understood from the following description taken in connection with the accompanying drawings forming part hereof; and in which- Figure 1, is a rear elevational view of an electro magnetic call bell embodying the particular features of my invention. Fig 2, is a perspective view through a portion of the housing adapted to contain the electro magnetic device and its accessories and the spring supported armature extending through the housing with an adjustable sounder or hammer connected therewith and showing also the insulating block detachably connected with the side wall of the housing with a binding post and fixed circuit breaker and post; and Fig. 3, is an end view showing the manner of supporting the bell, the projection of the side wall of the housing to which the contact spring is secured and clipped and provided with a platinum point and for contact ing with a fixed circuit breaker and binding post secured to adetachable insulating block provided with a binding post connected with one of the side or. end walls of the housing.

Referring to the drawings A, is a housing comprising a rectangular metal frame or strip,

a, provided with a curved and reduced projection a. In the top of the frame or strip a, near-one end thereof is formed a square or other shaped slot'a and in the side or end 1- I adjacent thereto an oblong slot a", for purposes to be presently explained.

A, is a cap riveted or screwed to the front edges of the frame or strip a, and with a rear projection a having openings 0, and "a therein for the insertion of screws or the like, in order to secure the device to the wall or to a fixture. Integral with the upper part of the cap A, is a right angular projection a formed at or beyond the middle of the same and having an upwardly'projecting lug 0.9, with an opening therein for the reception of a screw or the like a, connected with a bell B, and which latter is supported by means of said screw'a to the lug a", of the projection a as clearly illustrated in Figs. 1 and 3. At the right, hand side wallot the frame or strip d,'in theslot a ,isinsertedacentrallygrooved insulating block 0, provided with a binding post 0, and a fixed circuit-breaker c with a post 0 and a screw 0 for attaching a wire 3, thereto from one pole of a battery D, and the other wire 4:, being attached to the binding post 0, from the other pole of the battery D.

d, is a push button and d, a contact point I for establishing the circuit from the battery through the device.

E, is a magnet provided with a soft iron core e, which is held to position by means of a tightening screw e secured into the left hand side or end'wall of the frame or strip a, constituting the housing of the device and a'roundwhich screw 6, is attached one of the wires 1, from the magnet E, and the other wire 2, is connected with the screw 0 of the 0 binding post c,-sec11red into the inner side of the insulating block C. v

F, is a soft iron armature secured to a metal contact spring G, which at the right hand side or end wall of the frame or strip a, is at- 5 l tached to the curved projection a and is provided with an integral clip g, which is bent around the same and engages a recess a in the end of the strip a, and so as to prevent sidewise movement or displacement of the [O0 spring, while in position. The forward portion of the spring G, is bent so as to project upward and forward and provided with a platinum or other suitable contact point 9 which is adapted to contact with the fixed circuit breaker c. The armature F, secured to and supported to position from the spring G, extends through the slot a of the strip a,

and has the upper part recessed and made to flare slightly and to which upper part of the armature F, is adj ustably supported a hammer or sounder f, provided with a V or similar shaped arm f and a washer f and tight-l ening screw f, for securing the hammer or sounder to required position in connection with the armature F. This armature is soarranged as to vibrate between the core e, of the magnet E, and the spring contact G, with its circuit breaker 0', when the circuit is established. It may be here remarked that the arrangement of the bell free from the hous-i ing and the movement of the hammer or sounder is such that the samestrikes the bell laterally with a distinct blow each time the armature is pulled up by the energizing of l the magnet to cause the core thereof to attract the same and thereby to cause an andible and distinct blow to be given to the bell and a sharp sound to be derived therefrom.

To operate the device her-cinbefore described with reference to Fig. 1, of the dra-wings, it will be understood that by causing the push button d, to contact with the point 61, the circuit from the battery D, will be es 1 tablished to effect a continuous actuation of the hammer or sounder f, against the bell B, i to produce a sharp or distinct sound therefrom.

Having thus described the nature and objects of my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. An electro magnetic signaling device, comprising a housing or frame having a bell supported free thereof, an electro-magneh, a spring supported armature projecting through said housing and provided with an adjustable hammer or sounder, a detachable insulated block having binding posts and a circuit breaking point adapted to contact with the free end of the springof said arma- 5 ture, and a battery circuit connected withthe binding posts'of said insulating block, substantia-lly as and for the purposes set forth.

2. A casingforan electro magneticbell,comprising a rectangular frame provided with a square or similar slot in the top and an oblong slot in one side and having a recessed and reduced projection with a recessed end,- a cap fitting the front edge of said frame with l a rear projection having openings therein, and 1 with a front right angular extension having a vertical lug provided with an opening,sub-' stantially as and for the purposes set forth.

breaker and a battery-circuit connected respectively with said binding-post and circuitbreaker, substantially as and for the purposes set forth.

4. An electromagnetic bell having a magnet with a soft iron core held to position by a binding screw secured to a. frame, a wire connected therewith from said magnet, an armature extending beyond said frame and carrying a laterally movable and oppositelyadjustable sounderor hammer, abel-l supported free from said frame, a binding-postand a circuitbreaker held in an insulating block detachably engaging said frame, a spring connected with said armature and adapted to contact with said fixed circuit breaker, and a battery circuit connected respectivelywith said hinding-post and circuit-breaker, substantia'llyas and for the purposes set forth.

5. An electro-magnetic beILoOmprising a slotted frame, a magnet mounted in said frame and having -a-cap with a flanged projecting plate and a right angular arm supporting a bell free therefrom, said magnet provided with an armature-lever supported beyondsa-id frame by a contact spring and provided with a laterally movable and adjustable hammer or sounder, abi-nding-post and a fixed'circu'itbreaker connected with a detachable insu- T lated block and a battery-circuit connected respectively with said binding-post and circuit-breaker, sn bstantiallya's and for the purposes set forth.

'6. An electro-magnetic call-bell provided witha groovedinsulating block hav-inga binding-post and a fixed circuit-breaker, a supported bell, a magnet, anarmature supported from a spring adapted to contact with said circuit breaker and said armature laterally movable and provided with an adjustable hammerorsounder and a battery circuit connected respectively with said binding-post and circuit-breaker, substantially as and for the purposes set forth.

In testimony whereof I have "hereunto set my signature int'he presenceof two subscribing witnesses.

JOHN J. GEARY.

Witnesses:

THOMAS M. SMITH, RICHARD 0. MAXWEDL. 

